Altocumulus

These are medium clouds formed between 6,500 – 23,000 feet (2,000 – 7,000 metres) and consists of water droplets. They are very similar to stratocumulus, but as they are a greater altitude, their appearance can look smaller. They, like the stratocumulus are formed by weak convection currents, started by turbulent airflows above. The convection affects a shallow zone as dry, static air above the cloud cover prevents further upward development.